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14-12-2018
Mathematics

contestada

The lengths of two sides of a triangle are 7 and 11. Which could not be the length of the third side?
5
10
12
19

Respuesta :

15-12-2018

If a, b and c are the lengths of the sides of a triangle then

if a ≤ b ≤ c, then a + b > c.

5, 7, 11

5 + 7 = 12 > 11 CORRECT

7, 10, 11

7 + 10 = 17 > 11 CORRECT

7, 11, 12

7 + 11 = 18 > 12 CORRECT

7, 11, 19

7 + 11 = 18 < 19 INCORRECT

Answer: 19.

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